218 lines
7.2 KiB
JavaScript
218 lines
7.2 KiB
JavaScript
/**
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* Copyright (c) 2007-2016 Kevin van Zonneveld (https://kvz.io)
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* and Contributors (https://locutus.io/authors)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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function sprintf () {
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// discuss at: https://locutus.io/php/sprintf/
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// original by: Ash Searle (https://hexmen.com/blog/)
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// improved by: Michael White (https://getsprink.com)
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// improved by: Jack
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// improved by: Kevin van Zonneveld (https://kvz.io)
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// improved by: Kevin van Zonneveld (https://kvz.io)
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// improved by: Kevin van Zonneveld (https://kvz.io)
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// improved by: Dj
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// improved by: Allidylls
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// input by: Paulo Freitas
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// input by: Brett Zamir (https://brett-zamir.me)
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// improved by: Rafał Kukawski (https://kukawski.pl)
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// example 1: sprintf("%01.2f", 123.1)
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// returns 1: '123.10'
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// example 2: sprintf("[%10s]", 'monkey')
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// returns 2: '[ monkey]'
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// example 3: sprintf("[%'#10s]", 'monkey')
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// returns 3: '[####monkey]'
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// example 4: sprintf("%d", 123456789012345)
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// returns 4: '123456789012345'
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// example 5: sprintf('%-03s', 'E')
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// returns 5: 'E00'
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// example 6: sprintf('%+010d', 9)
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// returns 6: '+000000009'
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// example 7: sprintf('%+0\'@10d', 9)
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// returns 7: '@@@@@@@@+9'
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// example 8: sprintf('%.f', 3.14)
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// returns 8: '3.140000'
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// example 9: sprintf('%% %2$d', 1, 2)
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// returns 9: '% 2'
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var regex = /%%|%(?:(\d+)\$)?((?:[-+#0 ]|'[\s\S])*)(\d+)?(?:\.(\d*))?([\s\S])/g
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var args = arguments
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var i = 0
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var format = args[i++]
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var _pad = function (str, len, chr, leftJustify) {
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if (!chr) {
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chr = ' '
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}
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var padding = (str.length >= len) ? '' : new Array(1 + len - str.length >>> 0).join(chr)
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return leftJustify ? str + padding : padding + str
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}
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var justify = function (value, prefix, leftJustify, minWidth, padChar) {
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var diff = minWidth - value.length
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if (diff > 0) {
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// when padding with zeros
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// on the left side
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// keep sign (+ or -) in front
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if (!leftJustify && padChar === '0') {
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value = [
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value.slice(0, prefix.length),
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_pad('', diff, '0', true),
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value.slice(prefix.length)
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].join('')
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} else {
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value = _pad(value, minWidth, padChar, leftJustify)
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}
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}
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return value
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}
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var _formatBaseX = function (value, base, leftJustify, minWidth, precision, padChar) {
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// Note: casts negative numbers to positive ones
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var number = value >>> 0
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value = _pad(number.toString(base), precision || 0, '0', false)
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return justify(value, '', leftJustify, minWidth, padChar)
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}
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// _formatString()
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var _formatString = function (value, leftJustify, minWidth, precision, customPadChar) {
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if (precision !== null && precision !== undefined) {
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value = value.slice(0, precision)
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}
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return justify(value, '', leftJustify, minWidth, customPadChar)
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}
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// doFormat()
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var doFormat = function (substring, argIndex, modifiers, minWidth, precision, specifier) {
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var number, prefix, method, textTransform, value
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if (substring === '%%') {
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return '%'
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}
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// parse modifiers
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var padChar = ' ' // pad with spaces by default
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var leftJustify = false
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var positiveNumberPrefix = ''
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var j, l
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for (j = 0, l = modifiers.length; j < l; j++) {
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switch (modifiers.charAt(j)) {
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case ' ':
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case '0':
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padChar = modifiers.charAt(j)
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break
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case '+':
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positiveNumberPrefix = '+'
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break
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case '-':
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leftJustify = true
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break
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case "'":
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if (j + 1 < l) {
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padChar = modifiers.charAt(j + 1)
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j++
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}
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break
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}
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}
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if (!minWidth) {
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minWidth = 0
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} else {
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minWidth = +minWidth
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}
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if (!isFinite(minWidth)) {
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throw new Error('Width must be finite')
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}
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if (!precision) {
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precision = (specifier === 'd') ? 0 : 'fFeE'.indexOf(specifier) > -1 ? 6 : undefined
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} else {
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precision = +precision
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}
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if (argIndex && +argIndex === 0) {
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throw new Error('Argument number must be greater than zero')
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}
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if (argIndex && +argIndex >= args.length) {
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throw new Error('Too few arguments')
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}
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value = argIndex ? args[+argIndex] : args[i++]
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switch (specifier) {
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case '%':
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return '%'
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case 's':
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return _formatString(value + '', leftJustify, minWidth, precision, padChar)
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case 'c':
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return _formatString(String.fromCharCode(+value), leftJustify, minWidth, precision, padChar)
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case 'b':
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return _formatBaseX(value, 2, leftJustify, minWidth, precision, padChar)
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case 'o':
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return _formatBaseX(value, 8, leftJustify, minWidth, precision, padChar)
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case 'x':
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return _formatBaseX(value, 16, leftJustify, minWidth, precision, padChar)
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case 'X':
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return _formatBaseX(value, 16, leftJustify, minWidth, precision, padChar)
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.toUpperCase()
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case 'u':
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return _formatBaseX(value, 10, leftJustify, minWidth, precision, padChar)
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case 'i':
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case 'd':
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number = +value || 0
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// Plain Math.round doesn't just truncate
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number = Math.round(number - number % 1)
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prefix = number < 0 ? '-' : positiveNumberPrefix
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value = prefix + _pad(String(Math.abs(number)), precision, '0', false)
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if (leftJustify && padChar === '0') {
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// can't right-pad 0s on integers
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padChar = ' '
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}
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return justify(value, prefix, leftJustify, minWidth, padChar)
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case 'e':
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case 'E':
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case 'f': // @todo: Should handle locales (as per setlocale)
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case 'F':
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case 'g':
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case 'G':
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number = +value
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prefix = number < 0 ? '-' : positiveNumberPrefix
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method = ['toExponential', 'toFixed', 'toPrecision']['efg'.indexOf(specifier.toLowerCase())]
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textTransform = ['toString', 'toUpperCase']['eEfFgG'.indexOf(specifier) % 2]
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value = prefix + Math.abs(number)[method](precision)
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return justify(value, prefix, leftJustify, minWidth, padChar)[textTransform]()
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default:
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// unknown specifier, consume that char and return empty
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return ''
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}
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}
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try {
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return format.replace(regex, doFormat)
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} catch (err) {
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return false
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}
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}
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